Comprehensive evaluation on wireless sensor networks（WSNs） performance is of great significance for network planning and management.Build comprehensive evaluation model network performance based on multiple index and use the entropy weight and linear weighting combinatorial method to get the value of comprehensive evaluation of performance under different simulation scenarios.Establish simulation example of different network topology structures

simulate different applications by changing node size and network load.Choose network delay and throughput as performance metrics to obtain the performance datas of different topology structures.Analysis results show that multi-index comprehensive evaluation model can avoid human foctor influence and take a comprehensive assessment of comprehensive performance of the network accurately.Targetedly adopting appropriate topology structure can greatly improve comprehensive performance of the network.